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Home > Technologies > Separations/ Spectroscopy
Preconcentrator Recovers Labile Compounds Booth 2369. The 7150 headspace preconcentrator from Entech Instruments can recover C2 to C25 compounds at ppm to sub-ppb levels, including labile compounds unable to survive strong adsorbents or a hot GC injector. A first-stage implements Active SPME, allowing compounds from C12 to C25 to be trapped and desorbed quantitatively. This stage eliminates the exposure of heavy VOCs and SVOCs to strong adsorbents, enabling effective compound recovery and transmission to the GC. Lighter, unretained compounds typically missed are recovered utilizing a CO2-cooled Tenax trap. Cold trapping allows recovery of sulfur compounds, amines, and other thermally labile compounds that do not survive exposure to strong adsorbents.
The Deans Switch flow control solution through a miniaturized, fused silica lined flow path eliminates plastic rotors and dead volume challenges associated with heavy and polar compound carryover. The instrument quantitatively traps samples from 0.5 to 1000 cc to maximize GC-MS dynamic range, which is suitable for true determination of aroma significant or spoilage compounds during food and flavor testing. Other applications include environmental testing, industrial hygiene, breath analysis, forensics and residual solvent testing in pharmaceuticals.
Entech Instruments, Inc.
2207 Agate Ct.
Simi Valley CA 93065
Phone: 805-527-5939
Fax: 805-527-7913
http://www.entechinst.com
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